Half-Xor: A Fully-Dynamic Sketch for Estimating the Number of Distinct Values in Big Tables

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QSketch: An Efficient Sketch for Weighted Cardinality Estimation in Streams‏

Y Qi, R Li, P Wang, Y Sun, R **ng - Proceedings of the 30th ACM …, 2024‏ - dl.acm.org‏
Estimating cardinality, ie, the number of distinct elements, of a data stream is a fundamental
problem in areas like databases, computer networks, and information retrieval. This study …‏
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